diff --git a/magnumclient/osc/v1/clusters.py b/magnumclient/osc/v1/clusters.py
index 38d69914e6c9bc4b97201cb44d8c4b87482642f4..9c07b45b1e3a284b41f3c3f61618835cb91e3033 100644
--- a/magnumclient/osc/v1/clusters.py
+++ b/magnumclient/osc/v1/clusters.py
@@ -147,7 +147,7 @@ class CreateCluster(command.Command):
         parser.add_argument(
             '--cluster-config',
             dest='cluster_config',
-            metavar='<cluster-config>'
+            metavar='<cluster-config>',
             help=_('The path for the cluster create config file'))
         return parser